Sony KD-43X7 H Series Service Manual page 103

2020/12/12 02:35:59 (GMT+09:00)
2.5.2 Key Switch Buttons Error
NR 43/49/55/65 (BKR)
Parts issue
SAFETY NOTES SELF DIAGNOSTIC FUNCTION
In case that power key error
Check resistor value on B
board
Resistor value
NG
R9511 : 4.7k [ohm]
R5041 : 100 [ohm]
TROUBLESHOOTING
S E C T I O N 3
T R O U B L E S H O O T I N G
Key Switch Button no
function
Check harness connection
between B-board and switch
module
NG
Change harness between key
switch and B board
NG
Change switch unit module
NG
OK
Main device issue
Change B-board
SERVICE ADJUSTMENT
OK
Harness connection issue
OK B-board to switch module
harness issue
OK
Switch module issue
In case that tact key error
Check resistor value on B
board
Resistor value
R9508 : 12k [ohm]
NG
R9509 : 33k [ohm]
R5036: 100 [ohm]
OK
DIAGRAMS PANEL HANDLING
Parts issue
103
FACTORY DATA RESET
SYS SET